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(No Model.) 2 Sheets8heet 1 G. TRENOH.

MACHINE FOR MAKING BLASTING GARTRIDGES. 7 No. 245,031. Patented Aug.2,1881.

(No Model.) 2 Sheets-Sheet 2 G. TRENOH. MAGHINE FOR MAKING BLASTINGCARTRIDGES. No. 245,031.

Patented Aug. 2,1881.

UNITED STATES PATENT OFFICE.

GEORGE TRENGH, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO THE TONITEPOWDER COMPANY, OF SAME PLACE.

MACHINE FOR MAKING BLASTING-CARTRIDGES.

SPECIFICATION forming part of Letters Patent No. 245,031, dated August2, 1881. Application filed April 14,1881. (N 0 model.)

To all whom it may concern:

Be it known that I, GEORGE TRENCH, of the city and county of SanFrancisco, State of California, have invented an Improvement in Machinesfor the Manufacture of Blasting- Gharges; and I hereby declare thefollowing to be a full, clear, and exact description thereof.

-My invention relates to an improvement in the manufacture ofblastingcharges, and it re- 'f'ers more particularly to the mechanicalmethod of making the charge of the desired form and compactness, and tothe machinery for accomplishing this result.

In the manufacture of blasting-charges which consist of crushed orpulped gun-cotton mixed with any of the nitrates it is necessary tosubmit each charge to a heavy pressure and form it into cylinders ofhigh density, and some of said cylinders must be perforated with holesto receive the safety-fuse and detonator by which the charge isexploded. This treatment is necessary in, order to produce the bestresults in mining, and my invention is designed to provide a machine bywhich the charges are properly compacted and perforated.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is a vertical section of my apparatus. Fig. 2is a front view. Fig. 3 is a perspective view, showing the revolvingtable and plungers.

A is a vertical frame having supported in boxes across its top thecrank-shaft B. This shaft may have a spur-wheel, G, at one end, to bedriven by a pinion, D, upon the shaft E, or it may be driven by othersuitable connections which will furnish sufficient power. At theopposite end of this shaft B is a crank, F, which operates thevertically-movin g slide G through a connecting-rod, E. This slidecarries the pressing-tool I, which is secured to it in any suitablemanner. Below this slide, with its tool, is a circular table, J, whichis mounted upon avertical central spindle, about which it turns, theouter lower edge of the table moving upon a strong support, P, by whichthe pressure of the tool is resisted, and upon which the base of thecharge is supported while it is being compressed. Around the peripheryof the table are formed vertical holes a, into which the powder-chargesare placed, so that as the table is turned the charges will be broughtsuccessively beneath the pressing-tool, which is forced down upon them,thus producing the high density which is necessary. In order to formchambers or openings within these compressed powder-charges, so that thefuse and detonator may be properly introduced, I form the pressing-toolwith aslender elongated point, K, which enters the end of the charge asthe tool descends, and thus forms the hole, the charge being forciblycompressed around it. Another tool or punch, L, is connected with theslide G at a distance from the pressing-tool I equal to the distancebetween the holes (6 in the table, and after a charge has beencompressed the next movement of the table brings it beneath the punch L,by which it is forced out, the holes in the table extending entirelythrough it, and the space beneath being open at this point to allow thefinished charge to escape.

The table is rotated upon its axis by means of a pawl, M, which isformed to fit the teeth N of a circular rack upon the periphery of thetable; This pawl is pivoted to the lower end of an arm, 0, which extendsto the upper part of the frame A, and is pivoted at its center, so as tobe oscillated by the action of the crankarm, or a cam or eccentric uponthe shaft, as it revolves. This forces the pawl forward, and thus movesthe table one tooth corresponding with the distance between themolding-holes. By this means each hole passes in rotation under thepressing-tool, and the powder loaded into the holes is thus pressed intoa smaller compass and given the solid form required for a charge, whilethe second tool forces the completedcharge out of the molding-holes asthey arrive beneath it, so that they will fall into a receiver below.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- The rotating table J, with themolding-holes a and the support P beneath, in combination with thevertically-moving slide having the pressing-tool I and the ejecting toolor punch L acting simultaneously upon the charges in adjacent holes,substantially as herein described.

In witness whereof I have hereunto set my hand.

GEORGE TRENOH.

Witnesses Gno. H. STRONG, S. H. NoURsE.

